Kitchen sink



FIG. 1 is a front perspective view of a kitchen sink showing our newdesign;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a front view thereof.

Broken lines in the drawings depict portions of the kitchen sink thatform no part of the claimed design.

CLAIM The ornamental design for a kitchen sink, as shown and described.